Two years ago I bought a lot of old, damaged paintings at a flea market. I thought they would be perfect to frame new paintings in as the frames were still in good condition. The frames also work well as chalkboard or pin board frames so I've made one for the kitchen.
This is what it looked like before. I took the oil painting out of the frame and replaced it with 2 cm thick MDF plate that I first gave a coat of primer and next painted with black chalkboard paint. The cool thing about chalkboard paint is that you can get it mixed in whatever colour. I've used black as chalkboards, in my head, are either black or green.